UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - MK14 programming interface

Timbucus · 26th Apr 2019, 11:08 pm

Just a cross post in case someone is reading this thread and not the VDU one. I tried one of my MM80C95 chips (CMOS version) in place of IC11 and it works fine so far for the keyboard and the programmer at full speed. Probably because it is connected to the Data Bus so only needs a single fan out drive ability as all the others will not have CS asserted.

26th Apr 2019, 11:08 pm	#76
Timbucus Octode Join Date: Mar 2019 Location: Barry, Vale of Glamorgan, Wales, UK. Posts: 1,364	Re: MK14 programming interface - MK2 Just a cross post in case someone is reading this thread and not the VDU one. I tried one of my MM80C95 chips (CMOS version) in place of IC11 and it works fine so far for the keyboard and the programmer at full speed. Probably because it is connected to the Data Bus so only needs a single fan out drive ability as all the others will not have CS asserted.